小编use*_*687的帖子

我有访问数据库文件,其中有7个表,但我不知道如何连接和显示所有表,如果有人可以帮助我？

这是我的代码,但它没有显示任何内容

private void button1_Click(object sender, EventArgs e)
{
    OleDbConnection conn = new OleDbConnection();
    String connection = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\\Tables.accdb;Persist Security Info=True";
    string sql  = "SELECT Clients  FROM Tables";
    conn.ConnectionString = connection;
    conn.Open();
    DataSet ds = new DataSet();
    DataGridView dataGridView1 = new DataGridView();
    BindingSource bSource = new BindingSource();
    OleDbDataAdapter adapter = new OleDbDataAdapter(sql,conn);
    adapter.Fill(ds);
    //conn.Close();                               
    dataGridView1.DataSource = ds;